Jamb-supporting stay for door and window frames



Eiept. 14, 1926.

UNITED STATES PATENT OFFICE."

EMIL B. CARLSON, OF CHICAGO, ILLINOIS.

JAMB-SUPPORTING STAY FOR- Application filed December other frame members.

The principal object of this invention is to provide a simple, economical and eflicient jamb-supporting stay for door frames and window frames adapted to enable the jambs to be secured and held in properly spaced relation to the posts and other frame members of door frames and window frames, and adapted to enable the stays to be secured to the jamb before placing the jamb in position in the frame, and then secured to the door posts or other frame members and covered and concealed when the frame is finished.

Other and further objects of the invention will appear from the following description and claims, and from an inspection of the accompanying drawings which are made a part hereof.

The invention consists in the features, combinations, details of construction and arrangement of parts herein described and claimed.

In the accompanying drawing Figure 1 is a view in elevation of a door frame provided with jamb-supporting stays constructed in accordance with my invention, and showing a door jamb secured in position and connected with the door posts by means of my improved stays;

Fig. 2 is an enlarged View in section taken on line 22 of-Fig. 1 looking downward, as indicated by the arrows, and showing in detail a door frame provided with jamb-supporting stays in position to connect. and securely hold the jamb in properly spaced position with respect tothe door posts and the other frame members of a door frame, and with the stays in position to beconcealed from View in the finished frame;

Fig. 3 is an enlarged detail view of my improved metallic j amb-supporting stay -Fig. l is a view in side elevation of the jamb-supporting stay shown in Fig. 3;

Fig. 5 is an end view of the metallic stay shown in Figs. 3 and 4, and shows the pointed prongs in full lines in their normal initial position, and. inbroken lines as they would appear after being driven into the jamb and thereby bent or spread apart so as to securely hold the stay in position upon th e; j a'mb and D003 AND WINDOW FRAMES.

ieas. Serial No. 73,185.

masses- 6 is a detailed view in perspective of i a modified form of my improved jamb-supporting stay. In the accompanying drawing 7 I have shown a door frame provided with iamb- I supporting stays constructed in accordance with my invention and having the jamb,

secured and held in proper position with re- 1 spect to the door posts and other frame members of a door frame. It will be readily understood, however, that my improved yamb-supporting stays are adapted to be employed with equal advantage for window frames as well as door frames. V In constructing a door frame or window frame, or similar structure, provided with 3amb-supporting stays, in accordance with my invention, I provide a frame 1, which may be either a door frame or a window frame, or the like. The door frame shown in the accompanying drawings comprises upright side jambs 2, 2 the upper ends of which are connected with and by means of a top jamb or header 3 thus forming the insideframe or jambs of a door frame in connection with which my improved door sup porting stays" are to be employed. The frame thus formed is adapted to be mounted in upright position between opposite door posts or studs 4 and beneath a top door frame member or scantling 5 which extends across the top of the doorway and is connected with the door posts'or door studs. Upright grounds or ground strips 6 are secured to the door posts adjacent to the outer margins of the side jambs 2; and a similar horizontal ground or ground strip 7 is secured to the horizontal top frame member 5 in position to form stops for the plaster when it is spread upon the laths 8 in the usual manner. v

In order to provide means for securing and holding the jambs in proper position and in proper spaced apart relation to the door posts in accordance with my invention, I provide any desired numberof metallic jamb-supporting stays-9 which are constructed in accordance :with my invention, and each of which, by preference, comprises a flat metallic body portion 10 formed "ofa strip of sheet metal which is stamped or bent to form at one end thereof one or more sharp pointed prongs or teeth 11 which normally extend at right. angles to the main body portion of the stay, and has by preference. a projecting stop er guard 12 which may be stamped and bent outward or downward from the main body of the strip or metallic stay, so as to extend inward along and in contact with the inner surfaceof the'janib to which said stay is to be secured, and be tween the janib and the adjacent door post or frame member with which the jamb is to be connected and to which the stay is to be secured.

The stop or guard 12 is, by preference, fornied in one integral piece with the body 10 and pointed prongs or teeth 11 of the stay, and somewhat longer than the pointed prongs or teeth so that the stop is adapted to serve as a guide orguard which, by coming into engagement with the jamb and projecting inward between the jainb and the adjacent door post or frame member in advance of the pointed ends of the prongs l1, enables the stay to be readily and accurately placed' in exactly the proper position on the jan'i'b for enabling the sharppointed prongs 11 to be driven into the amb. A transverse flan 'e 13 which is integral with the ma n body portion of the stay extends across the space between the pointed prongs 11 and in the same plane with said prongs and forms a transverse projecting flange on the inner side or toothed side of the body of the strip or stay. This transverse flange 13 serves not only to connect and strengthen or brace the pointed prongs but also serves to com press and render more compact the wood or material into which the prongs are driven, and in which they are embedded when the stay is in use.

Each of the pointed prongs 11, in the preferred form of thedevice, is tapered so as to form opposite side margins which are in oblique relation to each other on opposite sides of the pointed end toward which said margins converge. In the form of the device shown in the accompanying drawings each ofthe prongs 11 has an inner oblique marginal portion or edge 14 which is in oblique relation to the outer margin or edge of such prong, and an inner projecting shoulder 15 is, by preference, formed 'on the inner side of each of said prongs or teeth lil. A recessed portion 16 is thus formed between the shoulder 15 of each prong 11 and the adjacent edge of the flange 13, into which recess the wood or material into which the prongs are driven, is forced and compressed, It should also be noted that the inclined or oblique margins 14 of the point-ed prongs are adapted to cause the prongs to be'bent or curved outward so as to tend to clinch the prongs in engagement with the material into which they are driven. The transverse flange 13, by compressing the wood or niater'ial'renders it more compact'and forces it into' the recesses16, and' serves to confine the wood oru'nate'rial in compact form between said" flange" and the: rojecting stop 12, so

that the stay is securely held in operative position upon the amb into which the prongs are driven.

From the foregoing it will be readily seen that jamb-supporting stays constructed in accordance with my inyentionare adapter to be secured in position upon the jambs of doors or windows or upon any structure upon or in connection with which the stays are to be used, and that the jambs may be placed in position after the stays have been secured thereto, and the stays may then be readily secured to an adjacent door post or frame member or other structure, and are adapted to serve as a' convenient means for enabling the janibs to be properly positioned accurately and with facility. After the jambs with the jan'ib-supporting stays thereon have been placed in PTOPGFPOSltlOIl, the stays may be readily secured to the door posts'or adjacent structure by means of nails 17 which may be inserted through openings 18 in the stays. The casings-19 and back bands or moldings 20 are then secured n place so as to coverand conceal the metallic stays and form the finished frame or structure.

In Fig. 6 isshown a modified form of my metallic jamb-supporting stay which 18 formed of a strip of sheet metal cut and bent or stamped to form a flat body portion 21,- a pointed prong 22, at one end of the stay, a projecting stop 23 having connected double walls 24, and if desired a second pointed prong 25 at the opposite extremity of the body of the stay from said first mentioned prong 22, all formed in one integral piece of sheet metal. The projecting stop 23 shown in said figure is in parallel relation to and spaced apart from thepoihted prong 22 and adapted to be inserted into the space between a ja'mb and an adjacent door post or other structure to which the stay is to be secured. The outer or projecting extremi ties of the normally parallel walls 24 which form the stop 23 being formed in one iiitegral piece and flexibly connected, and the base of one of said walls being united to the body portion 25 on which the first mentioned pointed prong 22 is located", and the opposite wall 24 of said guard or stop 23 being unitedto the body portion 21 between said stop and the opposite pointed prong 25, or opposite end of the stay, it will be readily seen that the stop 23 may be extended or spread by spreading apart the walls 24 to any desired extent, either to position the jamb with respect to' the door posts, by spreading the stop 23 inside of the space between the jamb and door post, or to extend and increase the effectual length'of the stay as desired, or as crrcumstancesniay req tire.

I claim 1. A jamb-stay comprisin metalstrap bent to afiord an elongated body portion and a jamb-entering element at one end of and at right angles to said body portion, said jamb-entering element being bifurcated to provide a pair of spaced pointed piercing fingers provided with inclined opposed edges which, without meeting, converge toward the body portion, said piercing fingers being adapted to spring apart when simultaneously driveninto a jamb, said body member being adapted for attachment to a frame wherein the jamb is mounted.

2. A jamb-stay comprising a metal strap bent to aiford an elongated straight body portion and a jamb-entering element at one end of and at right angles to said body portion, said jamb-entering element being bifurcated to provide a pair of spaced pointed piercing fingers, said piercing fingers having opposed edges which converge from the points of the fingers and then diverge toward the body portion, said body portion being adapted for attachment to a frame wherein is mounted a jamb pierced by the fingers aforesaid.

Signed at Chicago, in the county of Cook and State of Illinois this 30th day of November, 1925.

EMIL B. CARLSON. 

